Proportioning and Combination Valve, AC Delco 172-1353 & 172-1361

These GM combination-proportioning valves are based on the popular AC DELCO 172-1353 (PV2) 2 wheel disc and 172-1361 (PV4) 4 wheel disc valves. When upgrading your vehicle from drum to disc, these small items are a must. These components ensure proper fluid transfer and contain a residual pressure valve for proper braking feel.

All valves contain a low pressure shut off valve and warning light switch to ensure driver and vehicle safety should your brake system lose hydraulic line pressure. Aftermarket imported master cylinders with built in adjustable proportioning valves DO NOT feature this and could put you and your vehicle at risk. 

Applications:

• 2 wheel disc - PV2  
• 4 wheel disc - PV4

Safety Features: This valve is designed to isolate the front brakes from the rear brakes.  In the event of a failure, the emergency shut off valve detects a change in pressure and closes that portion of the brakes.